What Causes Breathlessness And Pressure In Stomach While Suffering From Obesity?

My husband is 58, overweight (obese), and is experiencing shortness of breath when he walks down the hall of our home. He also has a feeling of pressure in his stomach area. He is on furosemide, losartan-htcz. and is taking an aspirin a day. does he need to go to the ER or family Dr.